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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
The SI unit of charge is volt.
Fill in the folloing blank with suitable words:
A current is a flow of ............... .For this to happen there must be a ............... circuit.
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.
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(b) for lighting inside the rooms of the hotel?
A charge of 80 C flows in a conductor for 2 minutes.
(a) Calculate the current flowing through the conductor.
(b) If the current through a heater is 4 A what charge must be passing in 8 seconds?
What is the function of a step-up transformer?
Define the term kilowatt - hour and state its value in S.I. unit.
What does the direction of current convey?
