Advertisements
Advertisements
Question
The device used for measuring potential difference is
Options
Potentiometer
Ammeter
Galvanometer
Voltmeter
Advertisements
Solution
Voltmeter
APPEARS IN
RELATED QUESTIONS
How much energy is given to each coulomb of charge passing through a 6 V battery?
A battery of emf 12 V and internal resistance 2 Ω is connected with two resistors A and B of resistance 4 Ω and 6 Ω respectively joined in series.
Find:
1) Current in the circuit
2) The terminal voltage of the cell
3) The potential difference across 6Ω Resistor
4) Electrical energy spent per minute in the 4Ω resistor.
What is the unit of electric charge?
What do you understand by the term "electric potential"? (or potential) at a point? What is the unit of electric potential?
Name a device that help to measure the potential difference across a conductor.
In the circuit diagram given below, the current flowing across 5 ohm resistor is 1 amp. Find the current flowing through the other two resistors.
Explain the analogy between the flow of charge (or current) in a conductor under a potential difference with the free fall of a body under gravity.
A cell of e.m.f 2.0 V and internal resistance 1Ω is connected to the resistors of 3Ω and 6Ω in series. Calculate:
(i) the current drawn from the cell,
(ii) the p.d. across each resistor,
(iii) the terminal voltage of the cell and
(iv) the voltage drop.
Conceptual question.
Does a solar cell always maintain the potential across its terminals constant? Discuss
Study the following circuit and find:
- Effective resistance of the circuit
- Current drawn from the battery
- Potential difference across the 5 omega resistor
