Physics Past Questions and Answers

Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

A cell whose internal resistance is 0.55\(\Omega\) delivers a current of 4 A to an external resistor. The lost voltage of the cell is?

Which of the following liquid is a poor conductor of electricity?

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

The secondary pigments consist of?