If we double the radius of a current car...

If we double the radius of a current carrying coil keeping the current unchanged, the magnetic field at its centre will

remain unchanged

become double

be halved

become four times

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CHHAYA PUBLICATION-ELECTROMAGNETISM -EXERCISE

A current of 1 A is flowing through a circular coil of radius 10 cm ha...
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Which one of the following relations expresses Biot-Savart law ?
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If we double the radius of a current carrying coil keeping the current...
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A circular coil of radius r carries a current I . It produces magnetic...
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In the given figure a conductor is carrying a current I. The magnitude...
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Ratio of magnetic fields at the centre of a current carrying coil of r...
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Two wires PQ and QR carry equal currents I. One end of each wire exten...
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A vertical straight conductor carries a current vertically upwards. A ...
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Magnitude of magnetic field at the point P in arrangement shown in the...
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The magnetic field at the point of intersection of diagonals of a squa...
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A circular coil of radius R carries an electric current i. The magneti...
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The magnetic field B within a solenoid of length L with N turns and ca...
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In a current carrying long solenoid, the field produced inside the sol...
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A charged particle enters a magnetic field vec(B) perpendicularly with...
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The radius of the circular path described by a charged particle in a m...
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The magnitude of an electric field along x-axis is 1V.m^(-1) and in th...
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A beam of protons projected along positive x-axis experiences a force,...
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A moving electron and a moving proton enter a uniform magnetic field i...
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An alpha- particle and a proton having the same momentum enter a regio...
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A uniform electric field and a uniform magnetic field are acting along...
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