Magnetic Effects of Current and Magnetism (AIIMS Physics): Questions 45  48 of 49
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Question number: 45
» Magnetic Effects of Current and Magnetism » Magnet Oscillations
Question
A compass needle oscillates 10 times per minute at a place where dip is and 30 times per minute where the dip is . Compare the total magnetic field of earth at two places.
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Question number: 46
» Magnetic Effects of Current and Magnetism » Ampere's Law
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A current of flows through two long parallel wires. The magnetic force on each wire is If their currents makes doubled and separation between them makes of initial value then magnetic force per unit length of each wire becomes –
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Question number: 47
» Magnetic Effects of Current and Magnetism » Bar Magnet
Question
The magnetic field at a distance from a long magnet, which has magnetic pole strength , is –
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Question number: 48
» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer
Question
A galvanometer coil has a resistance of and it shows full scale deflection for a current of . Calculate the value of resistance required to convert it into an ammeter of range .
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