1. The  
   magnetic

   heating

   chemical

   physiological
    effect of electric current is used in an electric toaster..

1. The  
   magnetic

   heating

   chemical

   physiological
    effect of electric current is used in a medical defibrillator.

An electric current can be used to produce motion due to rotating magnetic fields when it is passed through:

When an electric current flows through a LED, electrons release energy as photons which generate: 

Electric current flow through a solid conductor is a movement of electrons through the conductor. During this process, whenever electrons collide with atoms and ions in the conductor it results in?

Which of the following are deemed by AS/NZS 3000 to be suitable methods of protection against contact with parts of an electrical installation that are live during normal service?

Which of the following are typical physiological effects of electric current?

The graph below shows the measured current that flow through a resistive load when different values of voltage are applied.

(a) Using the above graph, determine the current when the applied voltage is 7 volts.  A.

(b) Using the relationship between the voltage and current, calculate the value of the resistor the circuit. Ohms.

A current of 1A is passed through each of the resistors in the following circuits that have equal value resistance but with different Power Ratings.

Which of the three resistors would be heated up the most? 

Which of the three resistors would be heated the least? 

What would be the result of using a resistor that is below the required power rating in a circuit? 

Which of the three resistors is correctly rated for the circuit? 

An electric iron has a power rating of 1100W at 230V. What is the resistance of the element?