Introduction to Basic Electronics

What is the voltage across the terminals A & B ? Assume both the sources and connecting wires are ideal.

• 5 V

• 10 V

• 15 V

• 10/3 V

• None of the above

Series connected resistance of 5 Ω and 10 Ω is equal to

• 10 Ω

• 50 Ω

• 15 Ω

• 20 Ω

Graphite is a :

• conductor

• insulator

• semiconductor

• none of these

Which of the following doesn’t have forbidden energy gap between valence band and conductor band ?

• conductor

• insulator

• semiconductor

• None of the above

The battery connections required to forward bias a pn junction are ……..

• +ve terminal to p and -ve terminal to n

• -ve terminal to p and +ve terminal to n

• -ve terminal to p and -ve terminal to n

• none of the above

A semiconductor in its purest form is called.......

• Extrinsic semiconductor

• Superconductor

• Intrinsic semiconductor

• Insulator

For a silicon P-N junction, the barrier potential is about

• 0.7 V

• 0.8 V

• 0.9 V

• 1.0 V

In series, if one bulb goes out, others will

• stay on

• also turn off

• blow up

• heat up

Which of these colors is NOT used in the resistor value color code?

• white

• black

• violet

• pink

Which one is a 3 terminal device?

• Varactor diode

• LASER diode

• Transistor

• LED