The number of neutrons contained in the nucleus \(^{238}_{92}U\) is
92
146
238
330
Correct answer is B
238 - 92 = 146
0.03\(\Omega\) series resistor
0.03\(\Omega\) shunt resistor
9.99\(\Omega\) shunt resistor
9.99\(\Omega\) series resistor
Correct answer is B
No explanation has been provided for this answer.
A lamp is rated 240V, 60W. The resistance of the filament is
960\(\Omega\)
16\(\Omega\)
15\(\Omega\)
4\(\Omega\)
Correct answer is A
P = \(\frac{V_2}{R}\) \(\Rightarrow\) R = \(\frac{V_2}{p}\)
= \(\frac{240\times 240}{60}\)
= 960\(\Omega\)
heat dissipation
production of eddy currents
excessive current discharge
excessive voltage distance
Correct answer is A
No explanation has been provided for this answer.
13A
8A
5A
3A
Correct answer is B
P = IV \(\Rightarrow\) I = \(\frac{2000}{250}\)
= 8A