Answer:
In series
Explanation:
In such experiment, the ammeter is connected in series with the heater, in order to measure the circulating current.
By the way, ammeters are always connected in series in circuits to measure the running current in it.
Answer:
a vacuum formed above the column of mercury in a mercury barometer.
Answer:
18 V
Explanation:
Let
r = Radius of pollen grain = (general value)
E = Electric field =
Electric field is given by
Voltage is given by
The maximum voltage is 18 V
The formula for the pendulum experiment is based on the assumption that the amplitude is small so that the angle is approximately equal to the Sine of the angle.