If the current in the circuit for heating the filament is increased, the cutoff wavelength

If the voltage across the filament is increased, the cutoff wavelength

When filament current is increased

If the potential difference applied to tube is doubled and the separation between the filament and the target is also doubled, the cutoff wavelength

If the potential difference applied to tube is doubled and the separation between the filament and the target is also doubled, the cutoff wavelength

If the potential difference applied to tube is doubled and the separation between the filament and the target is also doubled, the cutoff wavelength

The heat produced by a resistor in any time t during the charging of a capacitor in a series circuit is half the energy stored in the capacitor by that time. Current in the circuit is equal to the rate of increase in charge on the capacitor.