The following statement about electric power is correct () A. Electric power is a physical quantity indicating how much work is done by current. B. The more electric energy consumed by electrical appliances in the same time, the greater the electric power. C. when several bulbs in series work, the electric power of bulbs with large resistance is smaller. D. the more work done by current, the greater the electric power

The following statement about electric power is correct () A. Electric power is a physical quantity indicating how much work is done by current. B. The more electric energy consumed by electrical appliances in the same time, the greater the electric power. C. when several bulbs in series work, the electric power of bulbs with large resistance is smaller. D. the more work done by current, the greater the electric power

A. Electric power is a physical quantity indicating the speed of current work, so a is wrong; B. according to P = WT, the more electric energy w consumed by electrical appliances in the same time t, the greater the electric power, so B is correct; C. The current of series circuit is equal everywhere, according to p = I2R, when several bulbs in series work, the electric power of bulbs with large resistance is large, so C is wrong; D. according to P = WT, the electric power depends on the electric power The ratio of the work done by the current w to the time t is that the current does more work and the electric power is not necessarily large, so D is wrong, so B is selected

In physics, the physical quantity that represents the speed of work done by an electric current is______ ．

In physics, we use electric power to express the speed of current doing work, so the answer is: electric power