برقیات، مقناطیسیت اور سرکٹ

Inside a conductor in electrostatic equilibrium, the electric field is:

• 1 Maximum
• 2 Zero
• 3 Equal to the field outside
• 4 Infinite

Kirchhoff's junction rule is based on the conservation of:

• 1 Energy
• 2 Momentum
• 3 Charge
• 4 Mass

A charged particle moves at right angles to a uniform magnetic field. If its speed is doubled, the radius of its circular path:

• 1 Halves
• 2 Doubles
• 3 Stays the same
• 4 Becomes four times as large

The peak voltage of an AC supply is 311 V. What is its approximate rms value?

• 1 311 V
• 2 220 V
• 3 155 V
• 4 440 V

What is the inductive reactance of a 0.1 H inductor at 50 Hz? (Take pi = 3.14)

• 1 5 ohm
• 2 314 ohm
• 3 31.4 ohm
• 4 3.14 ohm

An ideal ammeter should have:

• 1 Very high resistance
• 2 Zero resistance
• 3 Resistance equal to the circuit
• 4 Infinite capacitance

The SI unit of self-inductance is the:

• 1 Weber
• 2 Tesla
• 3 Henry
• 4 Farad