Galvanometer is a device used to detect an electric current.
<u>Explanation:</u>
A galvanometer is an electro mechanical instrument utilized for distinguishing and demonstrating an electric flow. A galvanometer fills in as an actuator, by creating a revolving redirection, in light of electric flow moving through a loop in a consistent attractive field.
Galvanometer is a gadget which is utilized to quantify electric flows. Note that the shunt obstruction must be low with the goal that greatest current goes through the shunt. Thus galvanometer can be utilized to gauge high flows.
 
        
             
        
        
        
Answer:
True is the correct answer for the above question.
Explanation:
- When any document file is opened then every point has some particular address. so there is a pointer which states that where the read operation and the write operation is going on.
 - When any person writes any program to read a file or write a file then there is a need for some variable that is pointed for the reading and the write operation. 
 - The document which is used for the write data or read data is also designed and maintained by some software.
 - Hence we can say that there are needs of some variable that point the operation of the file and it is also stated from the above question. Hence the above question statement is a true statement.
 
 
        
             
        
        
        
Answer:
The answer is option (4) Maximize redundancy as normalization minimizes redundancy of data. 
Explanation:
Normalization of databases leads to minimization of data redundancy in databases. It doesn't maximize data redundancy. Data redundancy leads to wastage of resources. Normalization of databases minimizes insertion anomolies. Normalization of databases minimizes deletion anomolies. Normalization of databases minimizes updation anomolies.  So , the answer to the question is option (4) maximize redundancy.
 
        
             
        
        
        
Answer is A. The data has been filtered
The funnel in Excel lets you know that there is a filter in place on the columns. It is a filter icon. By default, any filtered column in Excel gets a little funnel icon on the top row as shown in the image attached. Once this funnel symbols is clicked, it gives you options to filter using several criteria.
 
        
             
        
        
        
<span>Any computer or device on a network that can be addressed on the local network is referred to as a: node.</span>