A beam of light created by a concave mirror occurs when: - a light source is placed exactly at the focal point.
- the angle of incidence is equal to the angle of reflection.
- light rays are perpendicular to the optical axis.

Act has a 1200: 5 or 240: 1 turns ratio. it is short circuited. what is the maximum current at 1200a primary if we put a 100ohm resistor across the secondary end of the ct. use it as current source circuit.

Astate of matter all that has define volume and can flow is a(n)

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit