A digital meter is used to measure the current in an electric circuit.The reading on the meter fluctuates (varies) between 3.04 A and 3.08 A. The readings on themeter have an accuracy of 1%.What is the true value of the current, with its uncertainty?A (3.06  0.02) AB (3.06  0.04) AC (3.06  0.05) AD (3.06  0.07) A

An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured is 5 A. The limiting error is2%2.5%4%5%3%

In an experiment to determine the acceleration of free fall g, the time t taken for a ball to fallthrough distance s is measured. The percentage uncertainty in the measurement of s is 2%. Thepercentage uncertainty in the measurement of t is 3%.The value of g is determined using the equation shown.22tsg What is the percentage uncertainty in the calculated value of g?A 1% B 5% C 8% D 11%

What is the relationship between the accuracy and uncertainty of a measurement?

A spring is suspended from a fixed point and a force is applied. The position of a pointer attachedto the bottom of the spring against a vertical ruler is recorded.Before the force is applied, the position of the pointer is (225  2) mm.After the force is applied, the position of the pointer is (250  2) mm.The extension of the spring is determined.What is the percentage uncertainty in the extension?A 1.6% B 1.8% C 8.0% D 16%

If the true value for a measurement is 50.00 mL, which student's measurements are neither precise nor accurate? A   49.95 mL, 49.98 mLB   50.05 mL, 49.97 mLC   48.00 mL, 52.00 mLD   50.01 mL, 49.99 mL