Subject: Science, asked on 15/7/11

## what is the difference between resistance and resistivity???/

Subject: Science, asked on 26/9/15

## Write relation between heat energy produced in a conductor when a potential difference V is applied across its terminals and a current I flows through it for time t.

Subject: Science, asked on 27/4/12

## Can You Give Me Some Examples Of Ohmic And Non Ohmic Materials And Please These 2 Terms Also.No Copy Please Because I Could Search ON Net On Myself Also

Subject: Science, asked on 22/11/19

## In the adjacent circuit the voltages across AD , BD and CD are 2volts,6volts and 8 volts respectively ....if resistance RA is 1 kilo ohm then find RB and RC

Subject: Science, asked on 8/4/13

## Define 1 Coulomb??

Subject: Science, asked on 2/8/15

## consider the circuit shown in the diagram . find the current in 3 ohm resistor .

Subject: Science, asked on 30/7/13

## give all formula in chapter electricity

Subject: Science, asked on 31/5/14

## two resistors of 10 ohm and 15 ohm are connected in series to a battery of 6V. How can the values of current passing through them be compared?

Subject: Science, asked on 13/8/13

## why is ammeter connected in series and voltmeter in parallel?

Subject: Science, asked on 24/9/15

## State a difference between the wire used in the element of an electric heater and in a fuse wire.

Subject: Science, asked on 26/6/13

## Write the chemical name and formula of bleaching powder. How is it prepared

Subject: Science, asked on 8/4/15

## A positive charge is moving upward in a magnetic field which is towards north. The particle will be deflected towards_________________.

Subject: Science, asked on 24/9/13

## define one coulomb of charge?

Subject: Science, asked on 10/7/15

## A 60W light bulb has a current of 0.5 A passing through it. Calculate the no. of electrons passing a cross-section of the bulb and the no. of electron that pass that cross - section in one hour ?

Subject: Science, asked on 11/12/11

## a 4 ohm resistance wire is doubled on it  calculate the new resistance of the wire

Subject: Science, asked on 29/5/14

## 1)HOW MANY ELECTRONS MAKE 10 COULOMB OF CHARGE

Subject: Science, asked on 30/7/15

## what is the difference between an open and closed circuit? (3 points of difference)

Subject: Science, asked on 22/6/18

## If the conductor A and B are connected in series and V-I graph is plotted for the combination .Its slope would be- a) less than that of A b)between Aand B c) more than that of A d) more than that of B

Subject: Science, asked on 12/6/11

## Resistance of a metal wire of length 1m is 26 ohm at 20 degree centigrade. If the diameter is 0.3 mm, what is the resistivity?pls answer......thanks!!!

Subject: Science, asked on 24/7/13

## a conductor carries a current of 0.5 A.find the amount of charge flowing in 40s.and how many electrons are passing per /min through this conductor

Subject: Science, asked on 27/6/13

## Why voltmeter is always connected in parallel combination

Subject: Science, asked on 4/9/16

## if the voltage across a fixed value of resistance is increased 5 times .what would be change in current

Subject: Science, asked on 12/5/12

## what are the applications of Heating effects of electric current . [ joules heating ]

Subject: Science, asked on 15/6/16

## when 16 wires which are identical are connected in series, the effective resistance exceeds that when they are in parallel by 31 7/8 ohms. then the resistance of each wire in ohms is ---

Subject: Science, asked on 1/10/11

## A piece of wire of resistance 20 ohm is drawn out so that its length is increased to twice its original length. Calculate the resistance of the wire in the new situation?

Subject: Science, asked on 24/7/16

## Q1- A refrigerator of capacity 165 litres has a power rating 60 watts. If it runs continously for 5 hours. What unit of electric energy does it convert?Q2- How many joule are there in one kilowatt-hour? Calculate the cost of operating a 500 watt device for 20 hours at the rate of Rs. 3.59 per unit.Q3- Which one has a higher resistance 100 watt bulb or a 60 watt bulb each rated at 220 volts?Q4- A current of 20 amperes is drawn by the starter of a car for 15 seconds. How much electrical energy is drawn from the battery of 12 volts?Q5- A heater is constructed using a nichrome wire of total resistance 11.00 ohm by applying a potential difference of 220 volts. What is the current drawn by heater? What is power rating of the heater?Q6- Adomestic consumer uses a refrigerator of 60 watts for 5 hours, an electric iron of 750 watts for half an hour and two 100 watt bulbs for 4 hours everyday. What is the electric energy consumed in a month of 30 days?

Subject: Science, asked on 24/4/14

## define one ohm.

Subject: Science, asked on 26/11/19

## The radius of conducting wire is doubled. What will be the ratio of new specific resistance to the old one

Subject: Science, asked on 9/8/15

## two wires,one of copper and other of manganin, have equal lengths and equal resistances.Which wire is thicker ?Given that resistivity of copper is lower than that of manganin

Subject: Science, asked on 28/5/16

## When two ends of a metalic wire are connected across the terminals of a cell,some potential difference is set up between its ends.In which direction ,electrons are flowing through the conductors?

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