Advertisements
Advertisements
प्रश्न
The device used for measuring potential difference is
विकल्प
Potentiometer
Ammeter
Galvanometer
Voltmeter
Advertisements
उत्तर
Voltmeter
APPEARS IN
संबंधित प्रश्न
The p.d. across a lamp is 12 V. How many joules of electrical energy are changed into heat and light when:
a charge of 5 C passes through it?
A potential difference of 20 volts is applied across the ends of a resistance of 5 ohms. What current will flow in the resistance?
Calculate the current flowing through each of the resistors A and B in the circuit shown in the following figure.

Explain why potential difference is always less than the e.m.f. of a cell?
A current of 0.2 A flows through a conducting wire for 5 minutes. How much charge will flow?
Conceptual question.
Does a solar cell always maintain the potential across its terminals constant? Discuss
A cylindrical conductor of length l and uniform area of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has area of cross section.
Define Electric potential.
Twenty-seven drops of same size are charged at 220 V each. They combine to form a bigger drop. Calculate the potential of the bigger drop.
