Which of the following is usually used to cause fission in an atomic reactor?
A. Alpha particles B. beta particles C. electrons D. Neutrons Correct Answer: Option D D. NeutronsIf a radioactive atom emits a beta particle, Its mass number.
A. increases by one B. remains the same C. decreases by one D. increases by two Correct Answer: Option B B. remains the sameCalculate the inductance L, of the coil in the circuit diagram shown below.
A. 3.8H B. 0.6H C. 0.4H D. 0.2H Correct Answer: Option B B. 0.6H Explanation XL = V/I=240/2=120Ω L = XL/2πf = 120×π/2×π×100 = 0.6HA freely-suspended magnet swinging in a horizontal plane comes to rest with its axis pointing approximately
A. north-south B. south-west C. north-east D. south-east Correct Answer: Option A A. north-southProducts
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