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प्रश्न
An electric current flowing in a wire creates ______ around the wire.
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उत्तर
An electric current flowing in a wire creates magnetic field around the wire.
संबंधित प्रश्न
Choose the correct alternative and rewrite the following sentence.
When the resistance of a conductor increases, the current will ________ increase.
The circuit diagram given below shows the combination of three resistors R1, R2 and R3:
Find :
(i) total resistance of the circuit.
(ii) total current flowing in the circuit.
(iii) the potential difference across R1.
The lamps in a house hold circuit are connected in parallel because:
(a) this way they required less current
(b) if one lamp fails the others remain lit
(c) this way they require less power
(d) if one lamp fails the other also fail
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
Tick (✓) the correct choice among the following :
There are 500 turns and 2000 turns in the primary and secondary coil of a
transformer respectively. If th e output voltage is 1000 V, how large is the
input voltage?
State whether the current is a scalar or vector?
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
