Internal resistance is the resistance offered by________________?
Internal resistance is the resistance offered by________________? A. source of EMF B. conductor C. resistor D. capacitor
Internal resistance is the resistance offered by________________? A. source of EMF B. conductor C. resistor D. capacitor
Which one is the best material for making connecting wires ? A. iron B. tungsten C. silverD. copper
Resistance of a super conductor is ______________________? A. finite B. infiniteC. zero D. changes with every conductor
How much heat does a 40 W bulb generates in one hour ? A. 144000J B. 144J C. 1.44J D. 14J
One kilowatt hour is the amount of energy delivered during _______________? A. one second B. one day C. one minuteD. one hour
When same current passes for same time through a thick and thin wire_________________? A. more heat is produced in thick wireB. more heat is produced in thin wire C. no heat is produced in wire D. less heat is produced…
A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________? A. remains the same B. is doubled C. is halved D. becomes zero
Resistance of a conductor depends upon_________________? A. nature of conductor B. dimension of conductor C. physical state of the conductorD. all of above
All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________? A. same current B. same current and potential differenceC. different current but same potential difference D. different current and potential…
Why should a resistance be introduced in a circuit in series deliberately ? A. to increase currentB. to decrease current C. to control current D. just to give a good look to circuit