WorksheetsATL Quiz - 6 to 8
Total questions: 30
Worksheet time: 21mins
When all parts of the circuit are connected it is a --------- circuit.
Open
Closed
What happens to the bulb if the voltage of the power source is increased?
Becomes brighter
Becomes fainter
Bulb turns off
No effect
What happens to the buzzer if the polarity of the power source is reversed ?
produces no sound
produces louder sound
produces fainter sound
vibrates
Ions are charged particles which are formed when an atom
gains electrons
loses electrons
gains or loses electrons
shares electrons
When the measurement range is 0-20K, which of the following ranges can be used to get a
more accurate value?
0-2K
0-2000K
0-200K
0-2M
What do you call that symbol?
resistance
current
microfarad
ohm
What is a multimeter?
a tool used to estimate distance current travels
a tool used to find a correct locaton
a tool used to measure electricity
a tool used to measure electronics
What physical quantity does ammeter measures?
Voltage
Current
Resistance
Power
Which of the following circuit is a parallel circuit?
What is the effect of reversing the polarity of the voltage source on the direction of rotation of
fan blades?
direction reverses
no change in direction
A device that controls the direction of the flow of current through an electric motor
electromagnet
Electromagnetism
solenoid
commutator
The resistance of a conductor changes with its length and
------------------------.
(a)
Approximately how many mas of current flows through the circuit with 40 V source and a
resistance of 6.8kΩ?
27.2 mA
59 mA
5.9 mA
590 mA
What is the resistor value that is commonly used with LEDs?
290 ohms
29 ohms
2.9 ohms
0.29 ohms
Light emitting diodes emits light when it is in______________
forward biased
reverse biased
zero biasing
infinite biasing
LEDs are most popularly used because_________
it operates at high voltages
its power consumption is less
it is cheap and easy to handle
both 'b' and 'c'
Which of the following is not a characteristic of LED?
Fast action
High Warm-up time
Low operational voltage
Long life
In the above program, which pin of Arduino, is the LED is
connected to?
10
11
12
13
The line starting with ____ are not a part of the program code.
pinMode
int
//
{
Which of the following function runs over and over again ?
void setup
void loop
The setup function runs once when you press reset or (a) button.
Switches do not have any (a)
and can be
connected in the circuit in
any manner.
To make the LED blink for a half second ______ should be mentioned in the program code.
delay(1000)
High (1000)
delay(500)
HIGH 500
