Class X

 In system international, angular velocity is measured in
  1. Degree per second
  2. Rotation per second
  3. Radians per second
  4. Revolution per second
Ratio of voltages is inverse ratio of the
  1. Transformer
  2. Resistor
  3. Iron core
  4. Current
 A 20 cm wire carrying current of 10 A with magnetic field 0.30 T having angle 40° will produce force of
  1. 0.21 N
  2. 0.25 N
  3. 0.31 N
  4. 0.39 N
Fractional change in resistance per kelvin is known as
  1. Temperature constant
  2. Resistance coefficient
  3. Temperature coefficient
  4. Resistance constant
Maximum current a battery of e.m.f 3.0 V and internal resistance 1.0 Ω is
  1. 4.0 A
  2. 5.0 A
  3. 3.0 A
  4. 30 A
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