Potentiometer is a type of instrument by which potential difference ca – InterviewSolution

InterviewSolution

1.	Potentiometer is a type of instrument by which potential difference can be measured; then its resistance will be:(a) Zero(b) Infinite(c) Uncertain(d) Depends on external resistance
Answer» (b) Infinite Effective resistance of potentiometer is infinite.

Discussion

No Comment Found

Related InterviewSolutions

Give two differences between the electric resistance and electric specific resistance of a material.
State two multiples and two submultiples of the unit of electric potential and electric current.
which of element use to make bulb?
Do not connect the two __________of a cell with a single wire.
Connect a circuit on a wooden plank or on a thermocol sheet as shown in Figure. Insert two drawing pins at A and B. Insert a safety pin in between A and B. such that one end of the pin is completely in contact with B and the other end is left free. Now observe the bulb.What do you notice?What happens?Why doesn’t the bulb glow when the safety pin is left free at one end?
Connect circuits as shown in the following figure. Write your observation in each case.
What is current?
What is filament?
Do not connect the two terminals of a cell with a single wire. Give reason.
To prevent electric shock, electric wires cover with A) Plastic B) Cotton C) Iron D) Cloth