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qUESTIONS

In a Wheatstone’s bridge, three resistance P, Q and R are connected in the three arms and the fourth arm is formed by two resistances S₁ and S2 connected in parallel. The condition for the bridge to be balanced will be [2006]

The effective resistance between points P and Q of the electrical circuit shown in the figure is [2002]

An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be [2004]

The total current supplied to the circuit by the battery is [2004]

In the above circuit the current in each resistance is [2017]

Two batteries with e.m.f. of 12V and 13V are connected in parallel across a load resistor of 10 ohm. The internal resistance of the two batteries are 12 and 20 respectively. The voltage across the load lies between [2018]

MCQs-PYQs-12th-jee

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Which of the following equations represents a wave

A pulse or a wave train travels along a stretched string and reaches the fixed end of the string. It will be reflected back with

The stationary wave y = 2a sinkx cos ωt in a closed organ pipe is the result of the superposition of y = asin( ωt-kx) and

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