Relative density of a metal may be found with the help of spring balance. In air the spring balance reads  and in water it reads . Then, the relative density along with the maximum permissible percentage error would be 

A quantity is represented by . The % error in measurement of  and  are  and  respectively. The  error in  would be 

In an experiment four quantities  and  are measured with percentage error  and  respectively. Quantity P is calculated as follows

The heat generated in a circuit is given by , where  is current,  is resistance and  is time. If the percentage errors in measuring and  are  and  respectively, then the maximum error in measuring heat will be

A physical quantity  is described by the relation . If the relative errors in the measurement of  and  respectively, are  and , then the relative error in  will be :

The pressure on a square plate is measured by measuring the force on the plate and length of the sides of the plate by using the formula . If the maximum errors in the measurement of force and length are  and  respectively, then the maximum error in the measurement of pressure is

A physical quantity  is calulated using the formula , where  and  are experimentally measured quantities. If the fractional error in the measurement of  and  are  and  respectively, then the percentage error in  will be 

In a simple pendulum experiment, the maximum percentage error in the measurement of length is  and that in the observation of the time-period is . Then the maximum percentage error in determination of the acceleration due to gravity  is