Gamma rays are produced when?

3 years ago

A. high velocity electrons are abruptly stopped in metals B. energy changes occur within the nuclei of atoms C. energy…

Arrange the following radiations in order of increasing ionization of air.

3 years ago

I. Alpha Il. Gamma IIl. Beta A. I < III < II B. II < I < III C. II…

In doping an intrinsic semiconductor to produce a p-type semiconductor?

3 years ago

A. the semiconductor is heated up B. a donor element is added C. an acceptor element is added D. the…

A lamp is rated 240V, 60W. Determine the resistance of the lamp when lit?

3 years ago

A. 120Ω B. 240Ω C. 540Ω D. 960Ω Correct Answer: Option D = 960Ω

One major reason why electrical appliances in homes are normally earthed is that the?

3 years ago

A. person touching the appliance is safe from electric shock B. appliances are maintained at a higher p.d. than the…

In a series R-L-C circuit at resonance; impedance is?

3 years ago

A. maximum B. minimum C. capacitive D. inductive Correct Answer: Option A - maximum Explanation Since the current flowing through…

The speed of fast-moving neutrons in a nuclear reactor can be reduced by using?

3 years ago

A. graphite rods B. concrete shield C. iron rods D. boron rods Correct Answer: Option A - graphite rods Explanation…

Which of the following statements about electric potential energy is not correct?

3 years ago

A. The electric potential energy of a positively charged particle increases when it moves to a point of higher potential…