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प्रश्न
The power of an electric device is a product of ______ and ______.
उत्तर
The power of an electric device is a product of electric current and the potential difference.
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संबंधित प्रश्न
Consider the circuit given below when A, B and C are three identical light bulbs of constant resistance. 
(a) List the bulbs in order of increasing brightness.
(b) If C burns out, what will be the brightness of A now compared with before?
(c) If B burns out instead, what will be the brightness of A and C compared with before?
Tell the odd one out. Give a proper explanation.
Define the following:
Electromotive force
Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.
A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:
The resistance of the bulb
Match the items in column-I to the items in column-II:
| Column - I | Column - II |
| (i) electric current | (a) volt |
| (ii) potential difference | (b) ohm meter |
| (iii) specific resistance | (c) watt |
| (iv) Electrical power | (d) joule |
| (v) electrical energy | (e) ampere |
