MP TET · Mathematics and Science (Varg-2)
Current, circuits, magnets and electromagnetic effects.
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Q1 · Electricity and Magnetism · EASY
A student connects a bulb, a battery and a switch in a circuit. The bulb does not glow even when the switch is closed. Which of the following could be the reason?
Q2 · Electricity and Magnetism · MEDIUM
A compass needle placed near a current-carrying wire is observed to deflect. When the direction of current in the wire is reversed, the compass needle deflects in the opposite direction. This observation demonstrates which effect?
Q3 · Electricity and Magnetism · EASY
Two bar magnets are placed with their north poles facing each other at a small distance. What will happen when they are released?
Q4 · Electricity and Magnetism · MEDIUM
An electric bell circuit has a battery of 6 volts connected to a coil wrapped around an iron core. When the circuit is closed, the iron core becomes magnetized and attracts an armature. The current in the coil is 0.5 amperes. If the resistance of the coil is calculated using Ohm's law, what is its value?
Q5 · Electricity and Magnetism · MEDIUM
Three resistors of 2Ω, 3Ω, and 6Ω are connected in parallel. What is the equivalent resistance of the combination?