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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.
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उत्तर
Given, potential difference (V) = 12 V
Resistance, R = 24 Ω
Therefore, current (I) = `"V" / "R"`
Or, I = `12/24` = 0.5 A
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संबंधित प्रश्न
Explain the concept of electric potential difference in terms of work done in transferring the charge.
State and define the S.I. unit of potential difference.
State Ohm’s law.
Name the physical quantity of which the unit is coulomb
Name the physical quantity of which the unit is ohm
Calculate the total number of electrons flowing through a circuit in 20 mins and 40 s, if a current of 40 μA flows through the circuit.
[1 e– = 1.6 × 10-19 C]
Draw a diagram showing two bulbs connected in parallel to a dry cell.
