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संबंधित प्रश्न
What Makes an Electric Current Flow in a Wire?
The p.d. across a 3 Ω resistor is 6 V. The current flowing in the resistor will be:
(a) `1/2A`
(b) 1 A
(c) 2 A
(d) 6 A
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
Two resistors of 2.0 Ω and 3.0 Ω are connected (a) in series (b) in parallel, with a battery of 6.0 V and negligible internal resistance. For each case draw a circuit diagram and calculate the current through the battery.
Find the effective resistance in the following circuit diagrams (Fig.):
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
How should the electric lamps in a building be connected?
Unit of electric power may also be expressed as
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 |
