The energy change in a thermocouple is : 1.E E to E H 2.E S to E E 3.E L to E E 4.E H to E E :20

The resistance of an LDR 1.Increases as temperature decreases 2.Decreases as light level decreases 3.Increases as light level decreases 4.Decreases as temperature increases :20

The resistance of the LDR is : :   3.20   0 V 5 V 10 mA

When a capacitor charges up :30 1.The voltage across it decreases but the charge stored increases 2.The voltage across it increases and the charge stored increases 3.The voltage across it decreases and the charge stored decreases 4.The voltage across it increases and the charge stored decreases

The correct input device to supply a time delay is : :30 1.Solar cell 2.Microphone 3.Thermistor 4.Capacitor

The voltage across the 20  resistor is : 1.5 V 2.4V 3.1V 4.25 V :60 80  20  0 V 5 V

To decrease the time delay in an alarm circuit you would : :30 Vout 1.Increase the capacitance 2.Decrease the capacitance 3.Increase the resistance

What happens to Vout as light level falls ? 1.V out increases as R LDR decreases 2.V out decreases as R LDR decreases 3.V out increases as R LDR increases 4.V out decreases as R LDR decreases :30 V out 5 V 0 V

What happens to V out as temperature increases ? 1.V out decreases as R th increases 2.V out decreases as R th decreases 3.V out increases as R th decreases 4.V out increases as R th increases :45 V out 5 V 0 V

Explain what happens to Vout when the current is switched on :45 1.V out decreases as the capacitor discharges 2.V out increases as the capacitor charges 3.V out increases as the capacitor discharges 4.V out decreases as the capacitor charges