Physics

1In a purely inductive circuit, the current

2An inductor offers more opposition to high-frequency a.c.

3At resonance, the current in a series RLC circuit is a maximum.

4Find the reactance of a 20 μF capacitor at 50 Hz, to 1 decimal place.

5An alternating voltage has a peak value of 100 V. Find its r.m.s. value, to 1 decimal place.

6The mains supply in Ghana is about

7An a.c. supply has an r.m.s. voltage of 20 V. Its peak voltage, to 1 decimal place, is ___ V.

8The mains voltage quoted as 240 V is the peak value.

9An a.c. supply has an r.m.s. voltage of 240 V. Its peak voltage, to 1 decimal place, is ___ V.

10An a.c. supply has an r.m.s. voltage of 10 V. Its peak voltage, to 1 decimal place, is ___ V.