An electronic micro-heating element is used in a scientific instrument to melt a small calibration pellet of indium.
Write down the equation that links charge flow, current, and time.
During a calibration cycle, a charge of 3.15 C flows through the heating element in 1.40 s. Calculate the current in the heating element during this time.
The mass of the indium pellet is 0.015 kg. The specific latent heat of fusion of indium is 28 000 J/kg28\,000\text{ J/kg}28000 J/kg. Calculate the thermal energy needed to melt this pellet of indium using the equation:
E=m×LE = m \times LE=m×L