Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If the direction of the curent in a straight wire is reversed, the magnetic field
remains the same
becomes parallel to the wire
ceases to exist
is oppositely directed
Correct answer is D
No explanation has been provided for this answer.
13.0V
11.0V
3.0V
1.0V
Correct answer is B
\(\frac{V}{R} = \frac{E}{R + r} = \frac{V}{5.5} = \frac{12}{6}\)
v = 11.0V
82.50 cm
68.18cm
15.90cm
11.95cm
Correct answer is B
L = \(\frac{R.A}{e} = \frac{4 \times 7.50 \times 106{-4}}{4.40 \times 10^{-5}} = 68.18cm\)
2.0\(\Omega\).
3.0\(\Omega\).
5.0\(\Omega\).
6.0\(\Omega\).
Correct answer is A
\(\frac{V}{R} = \frac{E}{R + r}\)
\(\frac{0.9}{3} = \frac{1.5}{3 + r}\)
r = 2\(\Omega\).
effective resistance of the circuit is halved
total power dissipated is doubled
total current in the circuit is halved
terminal voltage is halved
Correct answer is B
No explanation has been provided for this answer.