Figure 1 shows a small hand-cranked DC generator connected to a center-zero analogue voltmeter.
Initially, the student turns the handle at a constant speed. Figure 2(a) shows the reading on the voltmeter.
The student then changes how they turn the handle. Figure 2(b) shows the new reading on the voltmeter.
Which row in the table correctly describes the rotation of the handle in (a) compared to (b)?
| Speed of rotation | Direction of rotation | |
|---|---|---|
| A | (a) is slower than (b) | (a) is opposite to (b) |
| B | (a) is slower than (b) | (a) is the same as (b) |
| C | (a) is faster than (b) | (a) is opposite to (b) |
| D | (a) is faster than (b) | (a) is the same as (b) |
Speed of rotation: (a) is slower than (b); Direction of rotation: (a) is opposite to (b)
Speed of rotation: (a) is slower than (b); Direction of rotation: (a) is the same as (b)
Speed of rotation: (a) is faster than (b); Direction of rotation: (a) is opposite to (b)
Speed of rotation: (a) is faster than (b); Direction of rotation: (a) is the same as (b)