Science 30 Diploma Examination January 2001

36. The electricity leaving a generating station passes through a number oftransformers before it reaches a consumer. One reason to step down the voltageentering homes is thatA. lower voltage moves slowerB. lower voltage is less dangerousC. less heat is produced by lower voltageD. more current results in a higher power billUse the following information to answer the next question.Household Circuit110 VLampMicrowaveCircuitbreakerRadioToaster37. According to the circuit diagram above, if the circuit breaker is off, which of thefollowing appliances will not receive any current?A. LampB. RadioC. ToasterD. Microwave38. The CANDU reactor converts some fuel mass to fission products and gamma rays.When the speed, frequency, and wavelength of gamma rays are compared withvisible light, gamma rays haveA. lower speed, higher frequencies, and longer wavelengthsB. the same speed, lower frequencies, and longer wavelengthsC. the same speed, higher frequencies, and shorter wavelengthsD. higher speed, the same frequencies, and shorter wavelengths22