Advertisements
Advertisements
प्रश्न
A cell of potential difference 12 V is connected to a bulb. The resistance of filament of bulb when it glows is 24Ω. Find the current drawn from the cell.
उत्तर
Given, potential difference (V) = 12 V
Resistance, R = 24 Ω
Therefore, current (I) = `"V" / "R"`
Or, I = `12/24` = 0.5 A
APPEARS IN
संबंधित प्रश्न
What do you understand by the term resistance?
How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?
Current in a circuit flows :
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at lower potential before electrical contact on the basis of convention?
4 × 1020 electrons flow through a circuit in 10 hours. Calculate magnitude of current. [1 e- = 1.6 × 10-19 C]
What is the electrical potential at a point in an electric field when 24 J of work is done in moving a charge of 96 C from infinity?
A bulb is connected to a cell. How is the resistance of circuit affected if another identical bulb is connected (i) in series, (ii) in parallel, with the first bulb?
