PractiseQuestion bank
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12 questions
SA-5054-EL6-0011 markL1 FoundationCalculatorInduction
A magnet is pushed into a coil connected to a sensitive ammeter. The ammeter shows a reading because
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0021 markL1 FoundationCalculatorInduction
Which change would increase the e.m.f. induced when a magnet is moved into a coil?
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0031 markL1 FoundationCalculatorInduction
A magnet is held still inside a coil. The induced e.m.f. is
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0041 markL1 FoundationCalculatorInduction
A magnet is pulled out of a coil instead of being pushed in. Compared with pushing it in, the induced e.m.f.
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0051 markL1 FoundationCalculatorGenerators
An a.c. generator is connected to the external circuit by
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0061 markL1 FoundationCalculatorGenerators
A generator's coil rotates 50 times per second. State the frequency of the alternating output, in Hz. Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0081 markL1 FoundationCalculatorGenerators
An oscilloscope trace has a peak 3.0 divisions above the centre line. The Y-gain is 2.0 V/div. Calculate the peak p.d. Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0091 markL1 FoundationCalculatorGenerators
Calculate the period, in ms, of a 50 Hz alternating supply. Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0121 markL1 FoundationCalculatorInduction
An e.m.f. is induced in a wire when the wire
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0072 marksL2 StandardCalculatorGenerators
On an oscilloscope, one complete cycle spans 4.0 divisions. The time-base is 5.0 ms/div. Calculate the frequency. Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0101 markL2 StandardCalculatorInduction
The direction of an induced current is always such that its magnetic field
Salam Academy Original Practice · Proposed mark scheme
SA-5054-EL6-0112 marksL3 ExamCalculatorGenerators
A power-station generator rotates at 3000 revolutions per minute. Calculate the frequency of the a.c. it produces. Salam Academy Original Practice · Proposed mark scheme