In an ideal transformer, if the primary voltage is doubled and the turns ratio remains the same, what happens to the secondary current?
35 Physics questions from the UHS MDCAT 2025 Past Paper (Paper ID-D). Answers follow the key printed in the source PDF.
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In an ideal transformer, if the primary voltage is doubled and the turns ratio remains the same, what happens to the secondary current?
Mechanical waves cannot travel through outer space because they:
If the surface charge density of an infinite sheet increases by 25%, the electric field intensity:
A 0.5 kg ball moving at 6 m/s has kinetic energy
If a body having mass m₁ (2 kg) moving with 5 m/s approaches another mass m₂ (3 kg) with speed of 1 m/s in same direction, relative speed of approach is 4 m/s. Relative speed of separation after collision will be:
A loop moves toward a stationary magnet. The induced current will:
The protons in the nucleus of an atom DO NOT exit due to
A ball is thrown into the air with certain velocity v making an angle θ with horizontal. If air resistance is neglected, then at maximum height its velocity is:
The wave that has the highest frequency & penetrating power is
For two equal positive charges, the electric field is weakest: