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Physics

Physics · Quick practice · answer shown after each question

Alternating current circuits

Question 1 of 10

Question 1 of 10

Find the reactance of a 100 μF capacitor at 50 Hz, to 1 decimal place.

Question 2 of 10

Question 2 of 10

Find the reactance of a 50 μF capacitor at 1000 Hz, to 1 decimal place.

Question 3 of 10

Question 3 of 10

The unit of inductance is the

Question 4 of 10

Question 4 of 10

An a.c. supply has an r.m.s. voltage of 20 V. Its peak voltage, to 1 decimal place, is ___ V.

Question 5 of 10

Question 5 of 10

Capacitors allow direct current to flow continuously.

Question 6 of 10

Question 6 of 10

The peak voltage V₀ is related to the r.m.s. voltage by

Question 7 of 10

Question 7 of 10

An a.c. supply has an r.m.s. voltage of 100 V. Its peak voltage, to 1 decimal place, is ___ V.

Question 8 of 10

Question 8 of 10

An alternating voltage has a peak value of 100 V. Find its r.m.s. value, to 1 decimal place.

Question 9 of 10

Question 9 of 10

The reactance of a capacitor

Question 10 of 10

Question 10 of 10

Resonance in a series RLC circuit occurs when

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.