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प्रश्न
A bulb draws current 1.5 A at 6.0 V. Find the resistance of filament of bulb while glowing.
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उत्तर
I = 1.5 A
V = 6.0 V
According to Ohm's law ,
V = IR
∴ `"R" = "V"/"I" = 6.0/1.5 = 4.0 Ω`
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संबंधित प्रश्न
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
The unit of current is :
State and define the S.I. unit of potential difference.
How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?
How electric current flows in solids?
Draw a diagram showing two bulbs connected in parallel to a dry cell.
Is electric current a scalar quantity?
