Explanation

• A transistor operates when it is properly biased and a suitable voltage is applied across its terminals.
• In a bipolar junction transistor (BJT), the emitter injects charge carriers into the base region.

Last verified on 02-11-2026

Explanation

• A lattice array is a regular, repeating arrangement of points representing the positions of atoms, ions, or molecules in a crystal.

Additional information:

• A unit cell is the smallest repeating structural unit that can generate the entire crystal lattice.
• A lattice constant is a parameter describing the dimensions of the unit cell, such as its edge lengths.

Last verified on 02-11-2026

Explanation

Displacement is shortest distance from start to end.

It forms a right angle triangle.

North = 20 Km

East = 10 Km

Formula: Displacement = sqrt( (20)^2 + (10)^2 )

Displacement = sqrt( 400 + 100 )

Displacement = sqrt( 500 )

Displacement = 22.36 Km

Last verified on 02-11-2026

Explanation

Accuracy is decided by least count. Smaller least count means more accurate instrument.

2.0 gm -> least count 0.1 gm

20.0 gm -> least count 0.1 gm

0.0002 gm -> least count 0.0001 gm

Least count of 0.0002 gm is smallest (0.0001 gm), so its absolute error is smallest.

So it is measured by most precise instrument, so it is most accurate.

Last verified on 02-11-2026

Explanation

Formula: e = L x dI/dt

e = 200 V

dI = 5 - 0 = 5 A

dt = 0.1 sec

L = e x dt / dI

L = 200 x 0.1 / 5

L = 20 / 5

L = 4 H

Last verified on 02-11-2026