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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
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
<p> Define the unit of electric current (or Define ampere).
V1, V2 and V3 are the p.ds. across the 1Ω, 2Ω and 3Ω resistors in the following diagram, and the current is 5 A.
Which one of the columns (a) to (d) shows the correct values of V1, V2 and V3measured in volts?
`V_1` `V_2` `V_3`
(a) 1.0 2.0 3.0
(b) 5.0 10.0 15.0
(c) 5.0 2.5 1.6
(d) 4.0 4.0 2.0
Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line.
(d) Which circuit would have less current in it?
Find the effective resistance in the following circuit diagrams (Fig.):
A strong short bar magnet is dropped into a solenoid connected to a
galvanometer as shown in fig. The galvanometer shows a deflection to the left when the current in the coil as seen from above is counter clockwise. Which one of the following shows the correct deflection of the galvanometer when the magnet is at posi tions A, Band C.
An electric bulb is rated '100 W, 250 V'. How much current will the bulb draw if connected to a 250 V supply?
A battery of e.m.f. 15 V and internal resistance 2 Ω is connected to two resistors of resistances 4 ohm and 6 ohm joined (a) in series. Find in each case the electrical energy spent per minute in 6 Ω resistor.
